Tree grate



FIG. 1 is a top plan view of a tree grate showing my new design;

FIG. 2 is a side elevational view thereof, the side opposite being a mirror image thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan of a second embodiment thereof;

FIG. 5 is a side elevational view thereof, the side opposite being a mirror image thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a tree grate, as shown and described. 